Silence is golden, time is money..
An average human brain weighs about 3 lb, has a volume of around 1130 cubic centimeters. At the age of 20, a typical human has around 176,000 km (149,000 km for females) of myelinated axons*. All this amazingness of our brain doesn’t mean that we have to know all useful information by heart (even if we use it almost every day).
Here are some sweet html/css tools, which will help you to save your time and will decrease your brain power consumption (so you will have enough energy for some more important things such as PS3, Xbox, Starcraft, Portal 2 and so on)…
Also, be sure to check out this nice article by smashingmagazine on Useful HTML-, CSS- and JavaScript Tools and Libraries.